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A comparison of 3D and axi-symmetric models in pipe welding simulation process

机译：管道焊接仿真过程中的3D与轴对称模型的比较

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摘要

In this paper, a detailed comparison of axi-symmetric and 3D pipe finite element models was carried out under the condition of same welding simulation parameters. Results showed that axi-symmetric model share similar residual stress distribution with 3D model in the condition of same heat source shape parameters. However, the stress values of the two concerned models were different. Meanwhile the scale of welding pool for 3D model was almost twice bigger than that of axi-symmetric model. Both welding experiment and simulation results of 3D model showed that peak temperature of welding pool along the welding path increased during the welding process, and welding pool width and depth also increased with the moving of heat source.
机译：本文在相同焊接仿真参数的条件下进行了轴对称和3D管有限元模型的详细比较。结果表明，在相同热源形状参数的条件下，AXI-ysemmetric模型与3D模型共享类似的残余应力分布。然而，两个有关模型的应力值不同。同时3D模型的焊接池的规模几乎比AXI对称模型的两倍。 3D模型的焊接实验和仿真结果表明，焊接过程中焊接池的峰值温度在焊接过程中增加，焊接池宽度和深度随着热源的移动也增加。

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